Improved dumb waptbr



A. CANNON, Jr.

DUMB WAITER.

No. 90.422. Patented May 25, 1869.

/ffZzW ARNOUT CANNON, JR.,-'OF POUGH'KEEPSIE, NEW YORK.

Letters Patent No. 90,422, dated May 25, 1869.

IMPROVED Dm WAII'ER.

The Schedule referred to in these Letters Patent and making part of thesome.

To all whom it may concern:

Be it known that I, Annou'r CANNON, Jr., of the city of Poughkeepsie, inthe county of Dutchess, and State of New York, have invented a new anduseful Improvement in Dumb Waiters; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, which willenable others skilled in the art to make and use the same, referencebeing bad to the accompanying drawing, forming'part ofthisspecification, in which- Figure l is a front View of my improved dumbwaiter, the front wall of the well being removed.

Figure 2 is a horizontal section of the well, taken through the line21-11:, fig. 1,, and showing a top view of the mechanism.

Similar letters of reference indicate corresponding parts.

My invention has for its object to improve the construction of dumbwaiters, so as to make them stronger,

safer, more'durable, and more easily controlled, so that they willremain stationary in any position in which they may be placed, both whenloaded and when empty; and

It consists in the construction, combination, and arrangement of variouspartsof the hoisting-device, as hereinafter more fully described.

A is the well, in which the waiter moves up and 1 down.

B is the waiter, in which the articles to be carried up and down areplaced, and which is constructed in the ordinary manner.

0 is the rope, by which the waiter B is suspended, and the end of whichis securely attached to the top of the said waiter B.

As the rope 0 passes up, it passes over the guidepulley D, around thelarge pulley, E, attached to the shaft I around the guide-pulley G,over. the pulley H, and into the weight-chamber I, where it is attachedto the weight J, which should be about one and a half time heavier thanthe waiter B.

K is the hoisting-wheel, which is attached to. the.

same shaft, F, with the large pulley, E, as shown in fig. 2. i

L is the endless hoisting-rope, which passes over the hoisting-wheel K,down along thelsides of the well A,

around the guide-pulleys M, and around the weight-- pulley N.

The pulley N should, be from eight to twelvepounds weight, more or less,and its journals enter and work in slots in standards 0, whichare placedand secured in the lower part of the well A, in such positions that theaxis of the pulley N may be in the same vertical-plane with the axis ofthe hoisting-wheel K, so that the weighted pulley N may not only keepthe hoistingrope I J taut, but may act as a balance-weight, inconnection with the friction of the rope O, to hold the waiterstationary at any desired elevation.

The grooves in the hoisting wheel K and in the large pulley E, should bemade V-shaped, to prevent the ropes L and G from slipping.

' Having thus described my invention,

What I claim as new, and desire to secure by Letters Patent, is-

1. The combination 'of the heavy, or weighted pulley N with the endlesshoisting-rope L and hoistingwheel K, substantially as herein shown anddescribed, that is to say, in such a way that the axis of the suspendedheavy pulley N maybe in the same vertical plane with the axis of thehoisting-wheel K, as and for the purposes set forth. 7

2. The combination and arrangement of the rope O,

guide-pulley D, large pulley E, guide-pulleysfG and H, and weight J,with each other, with the hoistingwheel K, and waiter B, substantiallyas herein shown and described, and for the purpose set forth.

ABNOUT CANNON, JR.

Witnesses WILLIAM Bnooxs, ANDREW J. .Oszrnom.

